Eutectic-Like Ion-Conductive Phase-Incorporated Zwitterionic Covalent Organic Framework Solid Electrolyte for All-Solid-State Li Metal Batteries.

ABSTRACT: High energy-density Li metal batteries with improved safety and cyclic performance can be achieved by adopting solid polymer electrolytes. However, current solid polymer electrolytes show inferior room-temperature ionic conductivity and Li-ion transference number (t_Li+), impeding their practical applications. Herein, a 3-(pyridinium)propane-1-sulfonate zwitterionic covalent organic framework (PSZ-COF) incorporating a eutectic-like ion-conductive phase is prepared by making a complex with N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide (Pyrrol-FSI) and Li salts in its channels as a solid electrolyte (eutectic PSZ-COF). The eutectic PSZ-COF possesses a zwitterionic Li-salt-dissociating mode, a Pyrrol-FSI Li-cation-transporting carrier, and a pyridinium anion-holding trap i

SUBMITTER: Lee J 

PROVIDER: S-EPMC12412492 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature